Efflorescence on Masonry


  #1  
Old 04-17-19, 07:31 AM
WRDIY's Avatar
Member
Thread Starter
Join Date: Jul 2012
Posts: 1,004
Received 26 Votes on 25 Posts
Efflorescence on Masonry

We put in pavers about 10 years ago which covers 70% of the frontyard. In the last two years after heavy rain season, we see yellow powder on the pavers. It is also on all near by floors.

Would this be Efflorescence on Masonry? I thought it is supposed to be a white residue, not chalk yellow?

Also, would this be a health concern if breathed in, like getting cancer?

Thanks
 
  #2  
Old 04-17-19, 07:35 AM
M
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 49,235
Received 672 Votes on 595 Posts
Are you sure the yellow powder isn't pollen?
I haven't heard of efflorescence causing cancer.
 
  #3  
Old 04-17-19, 08:52 AM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 9,481
Received 946 Votes on 859 Posts
Effervescent is like salt, as water passes through and evaporates the salt/minerals remain.

Yellow, got a picture?
 
  #4  
Old 04-18-19, 12:25 PM
WRDIY's Avatar
Member
Thread Starter
Join Date: Jul 2012
Posts: 1,004
Received 26 Votes on 25 Posts
I have attached three pictures. It is a yellow powder.
 
Attached Images    
  #5  
Old 04-19-19, 06:15 AM
J
Member
Join Date: Jan 2011
Location: USA
Posts: 5,007
Received 125 Votes on 110 Posts
Looks like pollen to me also.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: